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Turrell, G., John W. Lynch, George A. Kaplan, S.A. Everson, E.L. Helkala, J. Kauhanen, and J.T. Salonen. 2001. "Socioeconomic Position Across the Lifecourse and Cognitive Functions in Late Middle Age." Journals of Gerontology B Psychology Science Social Science, 257(1): S43-S51.
Turrell et al examined the influence of childhood and adult socioeconomic position, socioeconomic mobility and cumulative disadvantage across the lifecourse on cognitive function in late middle age. Their findings indicate that socioeconomic conditions across all stages of the lifecourse appear to make unique contributions to cognitive function in late middle age.